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Siding is commonly made from materials like vinyl, stucco, engineered wood, and even fiber-cement, each of which does an excellent job of shielding your home’s exterior from the elements. However, moist outdoor conditions can spur mold growth on your siding, which is a health hazard that can trigger respiratory problems in home occupants. While a competent siding contractor can remove mold safely and quickly, there are a few measures you can take to prevent this issue from occurring.

How to Prevent Mold on Your Siding

1. Prune Your Plants

When insects suck plant sap, they excrete excess nutrients in the form of honeydew. This liquid then sticks on leaves, twigs, and other surfaces. Some species of fungi—also known as sooty mold—can grow on this sticky liquid. 

Honeydew-covered leaves brushing against your siding can encourage mold growth in your home. Prevent this by pruning your plants and keeping tree limbs away from your exterior wall cladding. Avoid planting trees or shrubs close enough to your home that they can touch the side of the exterior.

2. Wash the Surface Regularly

siding contractor Onalaska, WIRegular cleanings using a garden hose and cleaning solution will prevent fungi from spreading throughout your home. For your cleaning solution, combine water, vinegar, and bleach or laundry detergent.

Scrub tougher stains with a long-handled scrub brush. If you do not have the proper equipment to clean hard-to-reach areas, contact a siding contractor for assistance.

3. Check Gutters, Ducts, & Drain Pipes

If you spot mold and mildew on your siding, start checking other parts of your house immediately. They can be caused by the steam from your clothes dryer or leaks in your rain gutters and drain pipes. Inspect and clear these areas of debris to minimize moisture buildup and mold growth. However, if your wall cladding is already warped and rotten, coordinate with a reliable siding contractor to schedule a replacement.


Regular maintenance is essential to keeping your wall cladding in good condition. For all your siding and roofing needs, rely on the team at Coulee Region Roofing & Siding in Onalaska, WI. This roofing and siding contractor has been in the industry for three decades, providing high-quality home improvements such as residential and commercial roof installations and siding repairs. Their fully insured team can help you choose aesthetically appealing materials to match your style and budget. Contact them today at (608) 780-5582 to schedule your free estimate, and check out their website for more information on their full range of services.

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